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#ifndef TARANTOOL_SCOPED_GUARD_H_INCLUDED
#define TARANTOOL_SCOPED_GUARD_H_INCLUDED
/*
* Copyright 2010-2016, Tarantool AUTHORS, please see AUTHORS file.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* <COPYRIGHT HOLDER> OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdlib.h>
template <typename Functor>
struct ScopedGuard {
Functor f;
bool is_active;
explicit ScopedGuard(const Functor& fun)
: f(fun), is_active(true) {
/* nothing */
}
ScopedGuard(ScopedGuard&& guard)
: f(guard.f), is_active(true) {
guard.is_active = false;
abort();
}
~ScopedGuard()
{
if (is_active)
f();
}
private:
explicit ScopedGuard(const ScopedGuard&) = delete;
ScopedGuard& operator=(const ScopedGuard&) = delete;
};
template <typename Functor>
inline ScopedGuard<Functor>
make_scoped_guard(Functor guard)
{
return ScopedGuard<Functor>(guard);
}
#endif /* TARANTOOL_SCOPED_GUARD_H_INCLUDED */
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